The releasing one-way valve is used to release the pressure from the casing string and pick up the device properly.

释放单向阀用于释放管柱内的压力使装置顺利从套管中提出。

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The releasing one-way valve is used to release the pressure from the casing string and pick up the device properly.

释放单向阀用于释放管柱内的压力使装置顺利从套管中提出。

youdao